From 585d8f16aa75530c963b478643b30092eb29d445 Mon Sep 17 00:00:00 2001
From: Andreas Huber <git@andreas-huber.net>
Date: Thu, 28 Dec 2023 14:18:00 +0100
Subject: [PATCH] click_button: fix count of present exclusive options (quick
 fix)

with options "x" and/or "y", @present_exclusive_options would contain "undef" elements, which will be counted too. Therefore click_button with x and y will always have more than > 1 options.
---
 lib/WWW/Mechanize.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/WWW/Mechanize.pm b/lib/WWW/Mechanize.pm
index a5fb033f..6939f9e2 100644
--- a/lib/WWW/Mechanize.pm
+++ b/lib/WWW/Mechanize.pm
@@ -2538,7 +2538,8 @@ sub click_button {
         value  => 1,
     );
 
-    my @present_exclusive_options = @exclusive_options{ keys %args };
+    my @present_exclusive_options
+        = map { $_ || () } @exclusive_options{ keys %args };
 
     if ( scalar @present_exclusive_options > 1 ) {
         $self->die(